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freebsd/sys/dev/vge
John Baldwin 068d8643ad Fix various NIC drivers to properly cleanup static DMA resources.
In particular, don't check the value of the bus_dma map against NULL
to determine if either bus_dmamem_alloc() or bus_dmamap_load() succeeded.
Instead, assume that bus_dmamap_load() succeeeded (and thus that
bus_dmamap_unload() should be called) if the bus address for a resource
is non-zero, and assume that bus_dmamem_alloc() succeeded (and thus
that bus_dmamem_free() should be called) if the virtual address for a
resource is not NULL.

In many cases these bugs could result in leaks when a driver was detached.

Reviewed by:	yongari
MFC after:	2 weeks
2014-06-11 14:53:58 +00:00
..
if_vge.c Fix various NIC drivers to properly cleanup static DMA resources. 2014-06-11 14:53:58 +00:00
if_vgereg.h vge(4) hardwares poll media status and generates an interrupt 2011-09-07 16:57:43 +00:00
if_vgevar.h Disable jumbo frame support for PCIe VT6130/VT6132 controllers. 2009-12-20 19:45:46 +00:00